2121221101122 has 16 divisors (see below), whose sum is σ = 4713824669280. Its totient is φ = 707073700356.

The previous prime is 2121221101067. The next prime is 2121221101187. The reversal of 2121221101122 is 2211011221212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2121221101095 and 2121221101104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19640936068 + ... + 19640936175.

It is an arithmetic number, because the mean of its divisors is an integer number (294614041830).

Almost surely, 2^{2121221101122} is an apocalyptic number.

2121221101122 is an abundant number, since it is smaller than the sum of its proper divisors (2592603568158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121221101122 is a wasteful number, since it uses less digits than its factorization.

2121221101122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39281872254 (or 39281872248 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2121221101122 its reverse (2211011221212), we get a palindrome (4332232322334).

The spelling of 2121221101122 in words is "two trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred one thousand, one hundred twenty-two".